package com.sistemasvendas.util;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import org.hibernate.SessionFactory;

import com.sistemasvendas.HibernateUtil;

public class ConexaoHibernateFilter implements Filter{

	private SessionFactory sf;
	
	@Override
	public void destroy() {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void doFilter(ServletRequest servletFilter, ServletResponse servletResponse,
			FilterChain chain) throws IOException, ServletException {
		try {
			this.sf.getCurrentSession().beginTransaction();
			chain.doFilter(servletFilter, servletResponse);
			this.sf.getCurrentSession().getTransaction().commit();
			this.sf.getCurrentSession().close();
		} catch (Throwable e) {
			  try {
				 if(this.sf.getCurrentSession().getTransaction().isActive()){
				    this.sf.getCurrentSession().getTransaction().rollback();
			     }
			  } catch (Exception e2) {
				  e2.printStackTrace();
			  }
			
			  throw new ServletException();
		}
		
		
	}

	@Override
	public void init(FilterConfig con) throws ServletException {
		this.sf = HibernateUtil.getSession();
		
	}

}
